%0 Journal Article
%A L. I. Kamynin
%A B. N. Khimchenko
%T On the strong extremum principle for a~D-$(\Pi,\Omega)$-elliptically connected operator of second order
%J Sbornik. Mathematics
%D 1981
%P 21-50
%V 40
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1981_40_1_a1/
%G en
%F SM_1981_40_1_a1